The first chapter introduced you to the basic concepts of object-oriented ABAP. In this chapter, we continue moving ahead and cover a number of useful topics that you need to know to work with ABAP Objects.
We also cover the concepts of local and global classes along with demos and examples. We will move one more step forward. I will use the global as well as local classes to exemplify my point.
CASE TYPE OF used for determining the type of an object reference variable
The NEW operator
Defining types in classes